US20190219088A1 - Screws with socket head - Google Patents
Screws with socket head Download PDFInfo
- Publication number
- US20190219088A1 US20190219088A1 US16/334,392 US201716334392A US2019219088A1 US 20190219088 A1 US20190219088 A1 US 20190219088A1 US 201716334392 A US201716334392 A US 201716334392A US 2019219088 A1 US2019219088 A1 US 2019219088A1
- Authority
- US
- United States
- Prior art keywords
- screw
- flanks
- respect
- head
- radially inner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000295 complement effect Effects 0.000 claims description 7
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/003—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool star-shaped or multi-lobular, e.g. Torx-type, twelve-point star
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
- B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
- B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
Definitions
- the present invention relates to a screw with a socket head.
- such a screw has a longitudinal axis and comprises a threaded shank and a head in which a socket is formed to be engaged by a wrench and having a pluri-lobed outer profile comprising a series of lobes circumferentially offset and separated by a series of circumferentially offset protrusions of said head.
- Each protrusion is delimited by two flanks and a front length joining the radially inner ends of the flanks and is convex and symmetrical with respect to a center axis radially oriented with respect to said longitudinal axis.
- U.S. Pat. No. 5,577,871 describes a screw of the type described above, which may be tightened with a special pluri-lobed wrench, with a profile complementary to that of the socket of the screw head, or with a conventional polygonal wrench.
- EP 2 441 971 A1 describes a screw having the features indicated in the preamble of claim 1, wherein the front length of each protrusion is composed of two inclined side faces that meet at a center edge.
- US 2012 137842 A1 describes a socket head screw with an external pluri-lobed profile, whereby the lobes are separated by concave protrusions.
- EP 1 693 577 A1 describes a screw with a head wherein Y-shaped grooves are formed.
- An object of the present invention is therefore to remedy the aforementioned drawbacks of the prior art.
- the screw of the invention may also be tightened with a known pluri-lobed wrench of the “Torx”® type or a conventional polygonal wrench, thus guaranteeing a remarkable versatility of use and an equal, if not increased, “tightening efficiency” in accordance with existing standards (e.g. ISO 4762 and ISO 14579) that provide dimensions of the socket for a given class of screws.
- existing standards e.g. ISO 4762 and ISO 14579
- the tightening of screw of the invention is carried out with increased efficiency.
- the Cartesian torque/screw angle diagram inherent to the screw of the invention, has a linear length with greater slope and a limit of linearity at a higher value of transmitted torque without causing undesirable nonlinear deformations with respect to the known socket screws mentioned above.
- the screw of the invention also has the advantage of having a reduced mass with respect to the known screws with a pluri-lobed cavity, due to the fact that each protrusion has a front length with a center “flush” face, which does not diminish the efficiency of the tightening, lying in a plane orthogonal to a radial plane passing through the longitudinal axis of the screw and the center line of the aforementioned center face.
- the latter face allows an optimal insertion of the three possible wrenches mentioned above, in particular the hexagonal wrench.
- the insertion into the socket of this latter wrench is in fact facilitated as there is no longer the edge joining the inclined faces of the ridges interposed between the lobes of the socket of the screw claimed by U.S. Pat. No. 5,577,871.
- Another subject-matter of the present invention is a pluri-lobed wrench having an external profile complementary to the profile of the socket of the head of the screw of the invention.
- FIG. 1 is a schematic plan view of a screw of the invention.
- FIG. 2 is a sectional view according to the line II-II of FIG. 1 .
- a screw 10 has a longitudinal axis 12 and comprises a threaded shank 13 and a head 14 within the center portion of which a socket 16 is provided open outwardly and intended to be engaged by a tightening tool such as a wrench.
- the socket 16 has a pluri-lobed external profile comprising a series of lobes 18 circumferentially offset and separated by a series of circumferentially offset protrusions 20 of the head 14 .
- the lobes 18 and the protrusions 20 are six and equally spaced, but, in embodiments not illustrated, could be present in any whole number ranging from 2 to 12.
- Each protrusion 20 is delimited by two flanks 22 and a front length 24 joining the radially inner ends of the flanks 22 and is convex and symmetrical with respect to a center axis 26 , radially oriented with respect to the longitudinal axis 12 of the screw 10 .
- the top surface of the protrusions 20 is further inclined towards the bottom of the socket 16 proceeding radially inward. It goes without saying, moreover, being that every protrusion 20 is convex, every segment joining any two points of the respective top surface is entirely contained in this latter surface.
- each protrusion 20 is formed by a center face 28 and two side faces 30 , inclined with respect to the axis 26 , each of which joins the radially inner end of the respective flank 22 with a respective end of the center face 28 , which is oriented orthogonally with respect to the center axis 26 .
- the two inclined side faces 30 of each front length 24 form an angle ⁇ between 155° and 174°, and preferably 162°.
- the center face 28 and the side faces 30 are flat and intersect, forming respective edges.
- the facing flanks 22 of two consecutive protrusions 20 form an angle ⁇ in the range of 25° to 45°, and preferably 34.8°.
- the ratio between the length of the center face 28 and the distance between the radially inner ends of the flanks 22 of each protrusion 20 is between 0.01 and 0.8.
- edges joining respectively the radially inner end of each flank 22 with the associated inclined side face 30 and the radially outer end of each flank 22 with the bottom of the adjacent lobe 18 are rounded.
- the screw 10 just described may be tightened not only with a specific wrench with a profile complementary to that of the socket 16 , but also with a known, “Torx”®-type pluri-lobed wrench and a conventional hexagonal wrench, having the advantages described above.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Connecting Device With Holders (AREA)
- Adornments (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
- The present invention relates to a screw with a socket head.
- More specifically, such a screw has a longitudinal axis and comprises a threaded shank and a head in which a socket is formed to be engaged by a wrench and having a pluri-lobed outer profile comprising a series of lobes circumferentially offset and separated by a series of circumferentially offset protrusions of said head. Each protrusion is delimited by two flanks and a front length joining the radially inner ends of the flanks and is convex and symmetrical with respect to a center axis radially oriented with respect to said longitudinal axis.
- U.S. Pat. No. 5,577,871 describes a screw of the type described above, which may be tightened with a special pluri-lobed wrench, with a profile complementary to that of the socket of the screw head, or with a conventional polygonal wrench.
- However, such a known screw cannot be tightened in an “efficient” way and without tightening-induced deformations, which in the field of application compromise the possibility of multi-tightening with wrenches other than those indicated above. Moreover, tightening with a hexagonal wrench may still to cause a deformation of the socket and thus reduce the efficiency of such operation with respect to the case wherein the special pluri-lobed wrench with a complementary profile is used.
- EP 2 441 971 A1 describes a screw having the features indicated in the preamble of claim 1, wherein the front length of each protrusion is composed of two inclined side faces that meet at a center edge.
- US 2012 137842 A1 describes a socket head screw with an external pluri-lobed profile, whereby the lobes are separated by concave protrusions.
- EP 1 693 577 A1 describes a screw with a head wherein Y-shaped grooves are formed.
- An object of the present invention is therefore to remedy the aforementioned drawbacks of the prior art.
- According to this invention, such purpose is achieved by means of a screw having the features indicated in claim 1 hereinafter. Preferred and non-limiting features of the screw of the invention are indicated in the dependent claims.
- In addition to using a specific wrench with a profile complementary to that of the related socket, the screw of the invention may also be tightened with a known pluri-lobed wrench of the “Torx”® type or a conventional polygonal wrench, thus guaranteeing a remarkable versatility of use and an equal, if not increased, “tightening efficiency” in accordance with existing standards (e.g. ISO 4762 and ISO 14579) that provide dimensions of the socket for a given class of screws.
- If the specific wrench with a complementary profile is used, the tightening of screw of the invention is carried out with increased efficiency. In this way, with the same screwing torque imposed, there is less deformation of the imprint of the screw's socket, which translates into a greater axial load (or “pull”) of the same screw. The Cartesian torque/screw angle diagram, inherent to the screw of the invention, has a linear length with greater slope and a limit of linearity at a higher value of transmitted torque without causing undesirable nonlinear deformations with respect to the known socket screws mentioned above.
- The screw of the invention also has the advantage of having a reduced mass with respect to the known screws with a pluri-lobed cavity, due to the fact that each protrusion has a front length with a center “flush” face, which does not diminish the efficiency of the tightening, lying in a plane orthogonal to a radial plane passing through the longitudinal axis of the screw and the center line of the aforementioned center face. The latter face allows an optimal insertion of the three possible wrenches mentioned above, in particular the hexagonal wrench. The insertion into the socket of this latter wrench is in fact facilitated as there is no longer the edge joining the inclined faces of the ridges interposed between the lobes of the socket of the screw claimed by U.S. Pat. No. 5,577,871.
- Another subject-matter of the present invention is a pluri-lobed wrench having an external profile complementary to the profile of the socket of the head of the screw of the invention.
- Further advantages and features of this invention will become apparent from the detailed description that follows, provided by way of non-limiting example with reference to the accompanying drawings, wherein:
-
FIG. 1 is a schematic plan view of a screw of the invention, and -
FIG. 2 is a sectional view according to the line II-II ofFIG. 1 . - A
screw 10 has alongitudinal axis 12 and comprises a threadedshank 13 and ahead 14 within the center portion of which asocket 16 is provided open outwardly and intended to be engaged by a tightening tool such as a wrench. - The
socket 16 has a pluri-lobed external profile comprising a series oflobes 18 circumferentially offset and separated by a series of circumferentiallyoffset protrusions 20 of thehead 14. Thelobes 18 and theprotrusions 20 are six and equally spaced, but, in embodiments not illustrated, could be present in any whole number ranging from 2 to 12. - Each
protrusion 20 is delimited by twoflanks 22 and afront length 24 joining the radially inner ends of theflanks 22 and is convex and symmetrical with respect to acenter axis 26, radially oriented with respect to thelongitudinal axis 12 of thescrew 10. The top surface of theprotrusions 20 is further inclined towards the bottom of thesocket 16 proceeding radially inward. It goes without saying, moreover, being that everyprotrusion 20 is convex, every segment joining any two points of the respective top surface is entirely contained in this latter surface. - The
front length 24 of eachprotrusion 20 is formed by acenter face 28 and two side faces 30, inclined with respect to theaxis 26, each of which joins the radially inner end of therespective flank 22 with a respective end of thecenter face 28, which is oriented orthogonally with respect to thecenter axis 26. - The two inclined side faces 30 of each
front length 24 form an angle β between 155° and 174°, and preferably 162°. Thecenter face 28 and theside faces 30 are flat and intersect, forming respective edges. - The facing
flanks 22 of twoconsecutive protrusions 20 form an angle α in the range of 25° to 45°, and preferably 34.8°. - Advantageously, the ratio between the length of the
center face 28 and the distance between the radially inner ends of theflanks 22 of eachprotrusion 20 is between 0.01 and 0.8. - The edges joining respectively the radially inner end of each
flank 22 with the associatedinclined side face 30 and the radially outer end of eachflank 22 with the bottom of theadjacent lobe 18 are rounded. - The
screw 10 just described may be tightened not only with a specific wrench with a profile complementary to that of thesocket 16, but also with a known, “Torx”®-type pluri-lobed wrench and a conventional hexagonal wrench, having the advantages described above. - Naturally, without altering the principle of the invention, the details of implementation and embodiments may vary widely with respect to those described purely by way of example, without thereby departing from the scope of the invention as defined in the appended claims.
Claims (9)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102016000099434 | 2016-10-04 | ||
IT102016000099434A IT201600099434A1 (en) | 2016-10-04 | 2016-10-04 | Screw with hollow head. |
PCT/IB2017/056061 WO2018065877A1 (en) | 2016-10-04 | 2017-10-02 | Screw with socket head |
Publications (2)
Publication Number | Publication Date |
---|---|
US20190219088A1 true US20190219088A1 (en) | 2019-07-18 |
US11098743B2 US11098743B2 (en) | 2021-08-24 |
Family
ID=58606562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/334,392 Active 2038-01-23 US11098743B2 (en) | 2016-10-04 | 2017-10-02 | Screws with socket head |
Country Status (16)
Country | Link |
---|---|
US (1) | US11098743B2 (en) |
EP (1) | EP3523545B1 (en) |
JP (1) | JP6985381B2 (en) |
KR (1) | KR102515490B1 (en) |
CN (1) | CN109891107B (en) |
AU (1) | AU2017339763B2 (en) |
BR (1) | BR112019006729A2 (en) |
CA (1) | CA3038724A1 (en) |
ES (1) | ES2920142T3 (en) |
HU (1) | HUE059238T2 (en) |
IT (1) | IT201600099434A1 (en) |
MX (1) | MX2019003393A (en) |
PL (1) | PL3523545T3 (en) |
PT (1) | PT3523545T (en) |
RU (1) | RU2749086C2 (en) |
WO (1) | WO2018065877A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190365422A1 (en) * | 2014-04-15 | 2019-12-05 | Biedermann Technologies Gmbh & Co. Kg | Screw element for use in spinal, orthopedic or trauma surgery and a system of such a screw element and a screw driver adapted thereto |
USD888544S1 (en) * | 2019-01-28 | 2020-06-30 | National Nail Corp. | Fastener head |
USD892604S1 (en) * | 2018-11-08 | 2020-08-11 | Superior Tool Co., Ltd. | Screw |
USD937077S1 (en) * | 2019-07-25 | 2021-11-30 | Katsuyuki Totsu | Screw |
USD1026605S1 (en) | 2022-10-20 | 2024-05-14 | National Nail Corp. | Tool bit |
USD1026636S1 (en) * | 2022-10-20 | 2024-05-14 | National Nail Corp. | Fastener head |
USD1035431S1 (en) * | 2022-10-20 | 2024-07-16 | National Nail Corp. | Fastener head |
Family Cites Families (24)
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US3187790A (en) * | 1959-05-18 | 1965-06-08 | Hi Shear Rivet Tool Company | Screw and screw driver coupling |
IT1245285B (en) | 1991-03-20 | 1994-09-13 | Fossati Onorina | Precision mounting screw and the key for this screw |
IT1273374B (en) * | 1994-03-04 | 1997-07-08 | Assistenza Tecnica Srl | SCREW FOR PRECISION TIGHTENINGS |
US6158310A (en) * | 1999-05-24 | 2000-12-12 | Textron Inc. | Drive system having a strengthened drive system member for resisting torsional stresses |
US6626067B1 (en) * | 2000-09-27 | 2003-09-30 | Snap-On Technologies, Inc. | Retention socket geometry variations |
DE60220050T2 (en) * | 2001-05-29 | 2008-01-10 | Osg Corp., Toyokawa | SCREWPROOF STRUCTURE, SCREWING MEMBER AND SCREWDRIVING TOOL |
AU2002950242A0 (en) * | 2002-07-18 | 2002-09-12 | Itw Afc Pty Ltd | Screws |
DE20313819U1 (en) * | 2003-09-05 | 2005-01-13 | A-Z Ausrüstung Und Zubehör Gmbh & Co. Kg | countersunk |
WO2005047716A1 (en) * | 2003-11-14 | 2005-05-26 | Katsuyuki Totsu | Screw with stabilized strength, combination with driver bit, and header punch for producing screw with stabilized strength |
JP4804940B2 (en) * | 2006-02-06 | 2011-11-02 | 株式会社トープラ | Screw parts and tightening tools |
RU2374063C2 (en) * | 2007-02-19 | 2009-11-27 | Игорь Вениаминович Холодков | Screw nut, bolt and socket wrench for their screwing and unscrewing |
JP3134604U (en) * | 2007-03-24 | 2007-08-23 | 株式会社兼古製作所 | L-shaped wrench |
US8347761B2 (en) * | 2007-05-21 | 2013-01-08 | Acument Intellectual Properties, Llc | Drive socket design for hold and drive fastener |
US20090133539A1 (en) * | 2007-06-12 | 2009-05-28 | Chin-Shun Cheng | Ratchet wheel of wrenches |
JP5155888B2 (en) | 2009-01-08 | 2013-03-06 | 日東精工株式会社 | Screw and driver bit |
DE102010003014B4 (en) * | 2010-03-18 | 2019-08-01 | Adolf Würth Gmbh & Co Kg | Drive training for a rotary drive |
DE102010029692B4 (en) * | 2010-06-04 | 2016-07-21 | Swg Schraubenwerk Gaisbach Gmbh & Co Kg | Rotary drive training |
EP2441971A1 (en) * | 2010-10-18 | 2012-04-18 | Fontana R.D. S.r.l. | A screw for precision tightening |
FR2967735B1 (en) * | 2010-11-24 | 2012-12-14 | Lisi Aerospace | END FIXING MEMBER IN A THREADED END TERMINAL, MALE ELEMENT, MANEUVER TOOL, AND SIZE COMPRISING SUCH A MALE MEMBER. |
CN102486196A (en) * | 2010-12-06 | 2012-06-06 | 鸿富锦精密工业(深圳)有限公司 | Fastening piece as well as driving piece matched with fastening piece and punch for forming fastening piece |
US20150266169A1 (en) * | 2013-05-10 | 2015-09-24 | Bryce Fastener, Inc | Methods and apparatus for asymmetrical fastening system |
US9422965B2 (en) * | 2013-05-10 | 2016-08-23 | Bryce Fastener, Inc. | Methods and apparatus for asymmetrical fastening system |
DE102013113401A1 (en) * | 2013-12-03 | 2015-06-03 | Adolf Würth GmbH & Co. KG | Screw and drive element with chamfer |
DE102014218373B3 (en) * | 2014-09-12 | 2015-09-24 | Kennametal Inc. | Assembly key for a tool head |
-
2016
- 2016-10-04 IT IT102016000099434A patent/IT201600099434A1/en unknown
-
2017
- 2017-10-02 BR BR112019006729A patent/BR112019006729A2/en not_active Application Discontinuation
- 2017-10-02 WO PCT/IB2017/056061 patent/WO2018065877A1/en unknown
- 2017-10-02 PL PL17787641.4T patent/PL3523545T3/en unknown
- 2017-10-02 ES ES17787641T patent/ES2920142T3/en active Active
- 2017-10-02 KR KR1020197012578A patent/KR102515490B1/en active IP Right Grant
- 2017-10-02 JP JP2019517843A patent/JP6985381B2/en active Active
- 2017-10-02 CN CN201780060957.7A patent/CN109891107B/en not_active Expired - Fee Related
- 2017-10-02 PT PT177876414T patent/PT3523545T/en unknown
- 2017-10-02 RU RU2019109063A patent/RU2749086C2/en active
- 2017-10-02 CA CA3038724A patent/CA3038724A1/en active Pending
- 2017-10-02 MX MX2019003393A patent/MX2019003393A/en unknown
- 2017-10-02 AU AU2017339763A patent/AU2017339763B2/en not_active Ceased
- 2017-10-02 EP EP17787641.4A patent/EP3523545B1/en active Active
- 2017-10-02 HU HUE17787641A patent/HUE059238T2/en unknown
- 2017-10-02 US US16/334,392 patent/US11098743B2/en active Active
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190365422A1 (en) * | 2014-04-15 | 2019-12-05 | Biedermann Technologies Gmbh & Co. Kg | Screw element for use in spinal, orthopedic or trauma surgery and a system of such a screw element and a screw driver adapted thereto |
US11045226B2 (en) * | 2014-04-15 | 2021-06-29 | Biedermann Technologies Gmbh & Co. Kg | Screw element for use in spinal, orthopedic or trauma surgery and a system of such a screw element and a screw driver adapted thereto |
USD892604S1 (en) * | 2018-11-08 | 2020-08-11 | Superior Tool Co., Ltd. | Screw |
USD888544S1 (en) * | 2019-01-28 | 2020-06-30 | National Nail Corp. | Fastener head |
USD937077S1 (en) * | 2019-07-25 | 2021-11-30 | Katsuyuki Totsu | Screw |
USD1026605S1 (en) | 2022-10-20 | 2024-05-14 | National Nail Corp. | Tool bit |
USD1026636S1 (en) * | 2022-10-20 | 2024-05-14 | National Nail Corp. | Fastener head |
USD1035431S1 (en) * | 2022-10-20 | 2024-07-16 | National Nail Corp. | Fastener head |
Also Published As
Publication number | Publication date |
---|---|
AU2017339763A1 (en) | 2019-05-16 |
KR102515490B1 (en) | 2023-03-28 |
EP3523545A1 (en) | 2019-08-14 |
CA3038724A1 (en) | 2018-04-12 |
KR20190060814A (en) | 2019-06-03 |
US11098743B2 (en) | 2021-08-24 |
RU2749086C2 (en) | 2021-06-03 |
AU2017339763B2 (en) | 2023-04-06 |
MX2019003393A (en) | 2019-06-06 |
JP2019529839A (en) | 2019-10-17 |
IT201600099434A1 (en) | 2018-04-04 |
JP6985381B2 (en) | 2021-12-22 |
PT3523545T (en) | 2022-06-30 |
HUE059238T2 (en) | 2022-11-28 |
WO2018065877A1 (en) | 2018-04-12 |
RU2019109063A (en) | 2020-09-28 |
EP3523545B1 (en) | 2022-05-04 |
RU2019109063A3 (en) | 2020-11-18 |
ES2920142T3 (en) | 2022-08-01 |
CN109891107A (en) | 2019-06-14 |
CN109891107B (en) | 2021-10-26 |
PL3523545T3 (en) | 2022-10-10 |
BR112019006729A2 (en) | 2019-06-25 |
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